The 20 Best Tankless Water Heaters for Your Home

The The 20 Best Tankless Water Heaters for Your Home of 2026, Reviewed and Compare

  • Sep 7, 2026
  • GetBestProduct Team

Top Picks

Stiebel Eltron Tempra 36 Trend Electric Tankless Water Heater

Stiebel Eltron Tempra 36 Trend Electric Tankless Water Heater, 36kW, 240V

Pros

  • Provides continuous hot water for multiple showers simultaneously.
  • Compact and modern design fits well into small spaces.
  • Energy-efficient operation reduces utility costs over time.
  • No noise during operation, ideal for peaceful environments.
  • Strong warranty coverage adds peace of mind to your purchase.

Cons

  • Requires professional installation due to hard wiring specifications.
  • Higher upfront cost compared to traditional tank water heaters.
  • May require upgrades to home electrical systems for optimal performance.

Key Features

  • Continuous Flow: Enjoy an unlimited supply of hot water on demand, eliminating interruptions during your showers.
  • Space & Energy Saver: Its compact design not only saves space but also operates without venting, making it eco-friendly with auto-modulation for energy efficiency.
  • Silent Operation: The heater operates quietly, ensuring it won't disrupt your household during use.
  • Power Specifications: Requires a minimum recommended electric service of 300 A, offering adjustable output temperatures from 68° to 140°F.
  • Warranties Included: Comes with a 7-Year Leakage and 3-Year Parts Warranty, reflecting Stiebel Eltron's confidence in their product reliability.

Specifications

  • Brand: Stiebel Eltron
  • Capacity: 0.39 gallons
  • Power Source: Hard Wiring Required
  • Product Dimensions: 16.63"W x 14.5"H
  • Special Feature: LED Display

The Stiebel Eltron Tempra 36 Trend Electric Tankless Water Heater is designed to provide powerful and efficient hot water for your home. With a remarkable output of 36kW at 240V, this unit ensures you have an uninterrupted supply of hot water whenever you need it. Whether you're taking multiple showers or running other hot water appliances, the Tempra 36 Trend can deliver consistent hot water while minimizing energy consumption.

Rinnai RXP160iN Smart Sense Tankless Water Heater

Rinnai RXP160iN Condensing Smart Sense Tankless Water Heater

Pros

  • Energy Efficient: High efficiency rating can lead to lower utility bills over time.
  • Long Lifespan: Unlike traditional tank heaters, this model has a longer operational life due to its design.
  • Space-Saving: Its compact dimensions reclaim valuable real estate in your home.
  • Professional Installation Recommended: Ensures optimal setup and compliance with safety standards.

Cons

  • Requires Professional Installation: Self-installation is not recommended, which may add to initial costs.
  • Optional Wi-Fi Module Required: Full smart capabilities require the purchase of the Control-R module separately.
  • Limited Warranty: While the warranty covers a decent period, registration is required to gain full benefits.

Key Features

  • Versatile Installation: Can be installed indoors or outdoors with the new Versa Vent system.
  • High Flow Rate: Provides up to 9 GPM, allowing multiple fixtures to be used simultaneously without running out of hot water.
  • User-Friendly Interface: The easy-to-use interface simplifies operation and customization.
  • Smart-Circ Technology: Learns your hot water usage patterns for efficient recirculation, reducing wait times and energy waste.
  • Compact Size: Designed to occupy minimal space, comparable to the size of a small suitcase.
  • Quick Flush Function: Facilitates easier maintenance by simplifying the flushing process.
  • Wi-Fi Connectivity: Can be enhanced with the optional Control-R module for remote management (sold separately).

Specifications

  • Brand: Rinnai
  • Capacity: 60 cubic inches
  • Power Source: Natural Gas or Propane
  • Product Dimensions: 19"W x 31"H
  • Special Features: Smart Sense gas control system, Smart-Circ Intelligent Recirculation, built-in recirculation pump, multiple venting options

The Rinnai RXP160iN Condensing Smart Sense Tankless Water Heater is a remarkable combination of efficiency, technology, and compact design that caters to the hot water needs of modern households. With an impressive energy factor of UEF .97, this unit is engineered to adapt to your specific requirements, making it an ideal choice for diverse family sizes and water usage patterns. Whether you prefer natural gas or propane, the Smart Sense gas control system ensures seamless operation while optimizing performance.

Ranein Tankless Propane Gas Water Heater, 3.6 GPM

Ranein Propane Gas Tankless Water Heater, 3.6 GPM, 80,000 BTU, Indoor

Pros

  • Endless hot water supply with rapid heating capabilities.
  • Multiple safety features ensure peace of mind during use.
  • Energy-efficient design helps reduce utility bills.
  • Child safety lock prevents accidental adjustments.

Cons

  • Installation requires licensed professionals, which may add to overall costs.
  • Not suitable for elevations above 2,000 feet.
  • Requires draining if the temperature drops below -5℃/23°F to avoid pipe damage.

Key Features

    Powerful On-Demand Heating: With 80,000 BTU and 3.6 GPM, this unit supports multiple outlets at once, ensuring endless hot water on demand.

    Precision Temp Control: The intelligent dynamic linkage allows you to adjust temperatures between 95°F and 149°F, effectively eliminating hot and cold spikes.

    Double Heating Chamber: This feature boosts efficiency and provides a consistent temperature while optimizing combustion for energy savings.

    Oxygen-Free Copper Heat Exchanger: Enhances heat transfer and corrosion resistance, working alongside dual chambers for superior performance.

    4 Preset Modes + Child Lock: Easily switch between modes tailored for different purposes, with a child lock mechanism for safety.

    All-Round Safety Features: Includes protections against overheating, dry burning, and exhaust blockage, along with a built-in anti-freeze device.

    Included Vent Pipe: Comes with an original vent pipe for installation, saving you additional costs.

Specifications

  • Brand: Ranein
  • Power Source: Propane Gas
  • Product Dimensions: 13.8"W x 21.7"H
  • Special Feature: LED Display
  • Color: Gray-LPG

The Ranein Propane Gas Tankless Water Heater is a powerful solution for your hot water needs, boasting an impressive capacity of 3.6 GPM and delivering up to 80,000 BTU. This indoor unit is designed for those who require efficient and reliable access to hot water without the limitations of a traditional tank system.

Rheem RTGH 9.5 GPM Natural Gas Tankless Water Heater

Rheem RTGH Series 9.5 GPM Natural Gas Tankless Water Heater Indoor | 199,900 BTUs Super High Efficiency On Demand, Continuous Hot Water | Condensing Ultra-Low Nox | WiFi Enabled

Pros

  • Provides continuous hot water without wait times.
  • Compact design saves valuable floor space.
  • Energy-efficient, using up to 34% less energy than standard 50-gallon electric tanks.
  • Exclusive Hot Start Programming eliminates cold water bursts during back-to-back uses.
  • Comes with a comprehensive warranty: 15 years on the heat exchanger, 5 years on parts, and 1 year labor.

Cons

  • Professional installation is recommended, which may incur additional costs.
  • This unit may not be suitable for smaller households that do not require high GPM rates.

Key Features

  • High Performance: Delivers endless hot water on demand for whole house use with a capacity of 9.5 gallons per minute (GPM) at a 35°F rise, powered by 199,900 BTUs per hour.
  • Condensing Technology: Features industry-leading condensing technology with a 0.93 Uniform Energy Factor (UEF), ensuring ultra-low gas bills.
  • Simultaneous Use: Ideal for 3-4 simultaneous showers, catering well to large families.
  • Safety Certified: CSA certified for safety with built-in freeze protection and a multi-point safety system.
  • Wi-Fi Enabled: Integrated EcoNet App allows you to control and monitor your hot water usage from your smartphone.

Specifications

  • Brand: Rheem
  • Capacity: 9.5 gallons
  • Power Source: Natural Gas
  • Product Dimensions: 17.7"W x 23.7"H
  • Special Features: Built-in Wi-Fi Technology, LeakGuard Leak Detection and Prevention System

The Rheem RTGH Series 9.5 GPM Natural Gas Tankless Water Heater is designed to provide your household with an uninterrupted supply of hot water. With its high efficiency and advanced features, this model stands out in the crowded field of tankless water heaters. You can expect quick delivery of hot water, making it particularly suitable for larger families or multi-bathroom homes.

CAMPLUX 5L Portable Tankless Water Heater - Instant Hot Water

CAMPLUX 5L Portable Tankless Water Heater, 1.32 GPM Outdoor Propane Shower for Camping, RV, Off-Grid, Instant Hot Water with Folding Handle, Overheat Protection, Low Pressure Startup, AY132, White

Pros

  • Compact and easy to transport, fitting easily in RVs or vehicles
  • Quick heating capability ensures comfort during outdoor activities
  • Low-pressure startup enables use in off-grid situations
  • Versatile applications for various outdoor needs
  • Multiple safety features provide peace of mind when using
  • Straightforward installation process suitable for all users

Cons

  • Requires batteries which may need to be replaced during extended use
  • May not meet hot water demands for larger groups
  • Optimal performance depends on compatible water pressure sources

Key Features

  • Lightweight and portable design, weighing only 10 lbs
  • Provides instant hot water at a rate of 1.32 GPM
  • No electricity needed; operates on low water pressure starting at 3.0 PSI
  • Powered by 2 D-size batteries, perfect for remote locations
  • CSA certified for safety with multiple protection features
  • Includes everything necessary for easy 10-minute setup

Specifications

  • Brand: CAMPLUX ENJOY OUTDOOR LIFE
  • Capacity: 5 liters
  • Power Source: Battery Powered
  • Product Dimensions: 4.33"W x 20.28"H
  • Special Features: Anti-Freezing Protection, Dry Combustion Protection, Flame Failure Protection, High Water Pressure Protection, Low Water Flow Protection, Overheat Protection

The CAMPLUX 5L Portable Tankless Water Heater is designed with the outdoor enthusiast in mind. Weighing just 10 lbs and featuring a folding handle, this compact water heater is ideal for camping, RVing, or any off-grid adventures. With the ability to deliver 1.32 gallons per minute (GPM) of instant hot water, you no longer have to endure chilly showers while enjoying nature.

This portable water heater operates without electricity and can begin heating water at just 3.0 PSI, making it compatible with low-pressure setups like small water pumps or gravity-fed systems. Its versatility extends to various uses, from outdoor showers after a long day of activities to washing mud off pets or cleaning dishes at your campsite.

Rheem RTGH Series 8.4 GPM Natural Gas Tankless Water Heater

Rheem RTGH Series 8.4 GPM Natural Gas Tankless Water Heater Indoor | 157,000 BTUs Super High Efficiency On Demand, Continuous Hot Water | Condensing Ultra-Low Nox

Pros

  • Provides endless hot water on demand, eliminating waiting periods.
  • Compact design saves space, making it suitable for small installations.
  • Exclusive Hot Start Programming prevents cold water bursts during back-to-back uses.
  • 15-year heat exchanger warranty ensures long-term reliability.
  • Low maintenance requirements thanks to the advanced technology used.

Cons

  • Professional installation is recommended, which may add to overall costs.
  • Higher initial investment compared to traditional tank water heaters.
  • May require adjustments to existing plumbing for optimal performance.

Key Features

  • High performance with an output of 8.4 GPM at a 35°F rise, suitable for whole-house usage.
  • Industry-leading condensing technology with a 0.93 Uniform Energy Factor (UEF), which can lead to significantly lower gas bills.
  • Designed for indoor installation with direct venting capabilities.
  • Ultra-low NOx emissions compliant, contributing to a cleaner environment.
  • Ideal for 3-4 simultaneous showers, providing convenience for larger households.
  • Uses up to 34% less energy than standard 50-gallon electric tanks.
  • CSA certified for safety and peace of mind during use.
  • Digital LED temperature control allows for precision adjustments within ±1°F.
  • Built-in freeze protection and a multi-point safety system to enhance user safety.
  • Includes mounting hardware and an installation manual for straightforward setup.

Specifications

  • Brand: Rheem
  • Capacity: 8.4 gallons
  • Power Source: Fuel powered
  • Product Dimensions: 17.7"W x 23.7"H
  • Special Features: Exclusive Hot Start Programming, Overheat Film Wrap, Electric Ignition

The Rheem RTGH Series 8.4 GPM Natural Gas Tankless Water Heater is designed for those who seek efficiency and reliability in their hot water supply. With a powerful output of 157,000 BTUs, this unit promises continuous hot water on demand, making it ideal for large families or homes with multiple bathrooms. Its innovative features aim to minimize wait times and energy consumption, offering both comfort and cost savings.

Ranein Tankless Propane Gas Water Heater - 5.3 GPM

Ranein Propane Gas Tankless Water Heater, 5.3 GPM, 130,000 BTU, Indoor

Pros

  • Fast and efficient hot water supply without the need for a storage tank.
  • Compact dimensions ensure it fits well in smaller spaces.
  • Quiet operation thanks to the adjustable blower speed.
  • Versatile enough for various residential applications.
  • Support from customer service for installation queries.

Cons

  • Not recommended for altitudes exceeding 2,000 feet, limiting its application in some areas.
  • Requires regular maintenance, especially in cold weather, to prevent issues like freezing.

Key Features

  • Fan Placement: Equipped with fans underneath for enhanced safety and improved combustion efficiency, minimizing smoke backflow.
  • No Waiting Required: Instant hot water available with no preheating necessary, making it ideal for busy households.
  • Easy Assembly: Standard 3/4" NPT water inlet and gas inlets allow for quick installation, suitable for both DIY enthusiasts and professionals.
  • Wide Application: Supports 3-5 outlet points, perfect for homes needing simultaneous hot water access.
  • Warranty: Comes with a 2-year warranty, offering peace of mind for your investment.

Specifications

  • Brand: Ranein
  • Power Source: Propane Gas
  • Product Dimensions: 14.17" W x 23.15" H
  • Special Feature: LED Display
  • Color: Gray-LPG

The Ranein Propane Gas Tankless Water Heater is a reliable choice for those looking to upgrade their home water heating system. With a capacity of 5.3 gallons per minute (GPM) and a powerful output of 130,000 BTU, this indoor model delivers hot water on demand without the wait typical of traditional tank systems. Its compact design ensures it won’t take up much space in your home while providing ample hot water for multiple outlets.

Rheem RTG Series 9.5 GPM Natural Gas Tankless Water Heater

Rheem RTG Series 9.5 GPM Natural Gas Tankless Water Heater Indoor | 199,900 BTUs High Efficiency On Demand, Continuous Hot Water | Non-Condensing | WiFi Enabled

Pros

  • Provides instant hot water without any waiting time.
  • Energy-efficient operation leads to reduced utility bills.
  • Compact design makes it suitable for smaller spaces.
  • Smart technology allows for convenient control via mobile devices.
  • Comes with a solid warranty (15 years for heat exchanger, 5 years for parts).

Cons

  • Professional installation is required, which may incur additional costs.
  • Initial investment could be higher compared to conventional water heaters.
  • Requires access to natural gas for operation, limiting options for some users.

Key Features

  • High Performance: Delivers endless hot water on demand with a capacity of 9.5 gallons per minute (GPM) at a 35°F temperature rise.
  • Energy Efficient: Achieves a 0.82 Uniform Energy Factor (UEF), saving up to 34% on energy costs compared to traditional 50-gallon electric tank heaters.
  • Space-Saving Design: Compact wall-mounted design that frees up valuable floor space for your home.
  • Advanced Safety Features: CSA certified with built-in freeze protection and flame failure protection for enhanced safety.
  • WiFi Enabled: Allows for remote monitoring and control through the EcoNet App, making it easy to customize your hot water usage.

Specifications

  • Brand: Rheem
  • Capacity: 9.5 gallons
  • Power Source: Natural Gas
  • Product Dimensions: 13.5"W x 24.2"H
  • Special Features: WiFi, LeakGuard Leak Detection and Prevention System, Hot-start Programming

The Rheem RTG Series 9.5 GPM Natural Gas Tankless Water Heater is designed to provide you with an efficient and reliable source of hot water for your entire home. With a remarkable output of 199,900 BTUs, this heater can deliver unmatched performance, ensuring that you never run out of hot water, even during peak usage times. This indoor gas water heater features advanced technology like Hot Start Programming to eliminate cold water bursts, allowing for seamless and continuous hot water supply.

Ranein Propane Gas Tankless Water Heater - 5.3 GPM

Ranein Propane Gas Tankless Water Heater, 5.3 GPM, 130,000 BTU, Outdoor

Pros

  • Provides instantaneous hot water without waiting.
  • Compact size fits easily in various installation spaces.
  • Equipped with safety features such as fans for combustion efficiency.
  • Suitable for multiple hot water outlet needs simultaneously.
  • LED display for user-friendly operation.

Cons

  • Not recommended for installation at altitudes over 2,000 feet.
  • Requires regular maintenance to ensure optimal performance.
  • Installation may be tricky for DIY novices without professional help.

Key Features

  • Fans Placed Underneath: This design enhances safety by preventing smoke backflow and includes a powerful blower that adjusts its speed based on external wind pressure and water temperature.
  • No Waiting Required: Say goodbye to waiting for your tank water heater to preheat. This tankless model provides unlimited hot water on demand.
  • Easy to Assemble and Use: It utilizes standard 3/4" NPT water and gas inlet fittings, making installation straightforward. Its compact dimensions of 23.2"L x 14.2"W x 5.7"H save space.
  • Wide Application: Ideal for 3-5 outlet points, this unit is capable of satisfying the hot water needs of an entire family.
  • Anti-Freeze Protection: A built-in feature that protects against freezing and cracking during cold weather conditions.

Specifications

  • Brand: Ranein
  • Power Source: Propane Gas
  • Product Dimensions: 14.17"W x 23.15"H
  • Special Feature: LED Display
  • Color: Gray-LPG

The Ranein Propane Gas Tankless Water Heater offers a robust solution for those seeking an efficient hot water supply without the wait. With a powerful output of 130,000 BTU and a maximum flow rate of 5.3 GPM, this heater is designed to meet the demands of a typical household with multiple outlets.

Ranein 12L Outdoor Propane Tankless Water Heater - 68,000 BTU

Ranein 12L Propane Tankless Water Heater, 3.18 GPM, 68,000 BTU, Outdoor

Pros

  • Provides unlimited hot water, ideal for high-demand scenarios.
  • Compact design makes it portable and easy to install anywhere outdoors.
  • Energy-efficient operation thanks to its advanced heating technology.
  • Multiple safety features ensure safe usage during operations.

Cons

  • Requires outdoor installation; cannot be used indoors.
  • May require professional installation if you're unfamiliar with gas appliances.
  • Heater performance may vary based on water flow rate and temperature settings.

Key Features

  • Compact Space-Saver: Measures 21.7" x 7.1" x 13" and weighs only 18 lbs, making it easy to install in various outdoor settings.
  • High Output: Provides 3.18 GPM of hot water heated to temperatures between 55°F and 109°F (13°C to 43°C).
  • No Waiting Required: Enjoy instant hot water on demand without the lengthy preheating times common with traditional tank heaters.
  • Superior Performance: Features an oxygen-free copper water tank that minimizes heat loss, enhancing energy efficiency.
  • Safety Features: Comes with six advanced safety protections and a 2-year warranty for peace of mind.
  • Installation Tip: For best results, avoid using Teflon tape between the gas regulator and gas inlet pipe to prevent gas leaks.
  • Ventilation Requirement: Should be installed outdoors; not suitable for indoor spaces like kitchens or bathrooms.

Specifications

  • Brand: Ranein
  • Capacity: 12 liters
  • Power Source: Propane Gas
  • Product Dimensions: 13"W x 21.7"H
  • Heating Capacity: 68,000 BTU
  • Water Output: 3.18 GPM heated from 55°F to 109°F (13°C to 43°C)

The Ranein 12L Propane Tankless Water Heater is an efficient and compact solution for your outdoor hot water needs. With a capacity of 3.18 GPM and a powerful output of 68,000 BTUs, this heater is designed for large-volume applications like yard cleaning, cabin supplies, or busy campsites. You will appreciate its space-saving design and the ability to provide unlimited hot water without any waiting time.

Ranein 6L Propane Tankless Water Heater - 1.58 GPM

Ranein 6L Propane Tankless Water Heater, 1.58 GPM, 41,000 BTU, Outdoor

Pros

  • Quick and Efficient: Provides hot water almost instantly, perfect for outdoor situations.
  • User-Friendly: Simple setup with no tools required makes it accessible for anyone.
  • Versatile Use: Suitable for various outdoor activities including pet bathing and outdoor showers.
  • Safety Measures: Multiple safety features ensure peace of mind during operation.

Cons

  • Limited to Outdoor Use: Not designed for indoor applications which may limit some users.
  • Requires Propane: Ongoing fuel needs may be inconvenient for some users.

Key Features

  • Instant Heating: Heats water quickly with no waiting time, starting as low as 3.6 PSI of water pressure.
  • Portable Design: Compact and lightweight, equipped with a foldable handle and hanging chain for easy mounting.
  • Safety Features: Includes a 6-in-1 safety system with auto-shutoff, overheat protection, and anti-freeze drain plug.
  • Durable Construction: Made from corrosion-resistant brass with weather-resistant capabilities for long-term use outdoors.
  • Complete Setup Kit: Comes fully equipped with a showerhead, gas regulator, and all necessary hardware for immediate use.

Specifications

  • Brand: Ranein
  • Capacity: 6 liters
  • Power Source: Gas-powered
  • Product Dimensions: 11.4"W x 14.7"H
  • Special Features: Anti-freezing protection, dry combustion protection, flame failure protection, high water pressure protection, low water flow protection, overheat protection.

The Ranein 6L Propane Tankless Water Heater is designed for those who need hot water on demand without the hassle of a bulky storage tank. With its powerful 41,000 BTU heating capacity and a flow rate of 1.58 gallons per minute (GPM), this tankless heater provides instant hot water, making it ideal for outdoor activities such as camping, RV trips, or beach showers.

APUS Propane Tankless Water Heater - 140,000 BTU, 6.8 GPM

APUS Propane Tankless Water Heater, 140,000 BTU, Up to 6.8 GPM, Indoor

Pros

  • Instantaneous hot water delivery enhances convenience.
  • High energy efficiency rating helps save on utility bills.
  • Compact size makes it easy to install in various spaces.
  • 24/7 customer service provides reliable support.
  • Smart controls offer modern functionality for busy lifestyles.

Cons

  • Initial setup may require professional assistance for some users.
  • Requires a liquid propane source, which may not be available in all areas.
  • Some users may find the price point higher than conventional tank heaters.

Key Features

  • Instant Hot Water: Delivers hot water in just 1 second, avoiding wait times.
  • Zero Cold Water Tech: Eliminates cold water wait time and saves up to 40% more energy compared to conventional models.
  • Built-in Booster Pump: Increases water flow by up to 130%, supporting simultaneous use of multiple fixtures.
  • Advanced Safety Features: Includes freeze and overheat protection with a quieter operation thanks to a bottom turbo fan design.
  • Smart Season Comfort Mode: Adjusts outlet temperature based on incoming water for consistent comfort.
  • WiFi Remote Control: Allows control via mobile app (Tuya APP) for preheating and monitoring from anywhere.

Specifications

  • Brand: APUS
  • Capacity: 6.8 gallons per minute
  • Power Source: Liquid Propane
  • Product Dimensions: 7.09"W x 21.26"H
  • Special Features: 24/7 customer service, easy installation, boosted water flow, WiFi remote control

The APUS Propane Tankless Water Heater is designed to provide you with instant hot water without the lengthy wait times associated with traditional models. With an impressive 140,000 BTU burner and a durable oxygen-free copper heat exchanger, this unit delivers consistent performance that meets your household needs.

Equipped with advanced features like zero cold water technology and a built-in booster pump, the APUS heater ensures a reliable supply of hot water, even when multiple outlets are in use. Its compact design and easy installation make it a suitable choice for any home looking to upgrade its hot water system.

CAMPLUX Portable Water Heater - 1.32 GPM, 5L Tankless Propane

CAMPLUX 1.32 GPM Portable Water Heater, 5L Tankless Water Heater Propane Outdoor, AY132B, Black

Pros

  • Compact and Easy to Transport: Its lightweight design makes it ideal for various outdoor scenarios.
  • Water Saving Feature: The ability to pause your shower helps conserve water, making it both eco-friendly and economical.
  • Robust Safety Features: The integrated safety mechanisms ensure safe operation, even in challenging environments.
  • Complete Setup: The package includes everything needed for installation and use right out of the box.

Cons

  • Limited Capacity: With a maximum output of 1.32 gallons, it may not suffice for larger groups or extended use without refilling.
  • Battery Dependency: While it offers portability, being battery-powered means you'll need to have D batteries on hand, which can be inconvenient.

Key Features

  • Portable, Lightweight Design: The heater's folding handle keeps it compact during travel, making setup a breeze wherever you go.
  • Water Efficiency: Once your ideal temperature is reached, you can control your shower by switching the shower rose on and off, allowing you to save water while soaping up.
  • Versatile Applications: It operates with a minimum water pressure of 3.0 PSI, making it suitable for off-grid living and rural areas. No more chilly showers when you're outdoors!
  • 6-in-1 Protection & CSA Safety Approved: This unit includes multiple safety features like anti-freezing, over-heating, and low water flow protection. It is also CSA certified for peace of mind.
  • Comprehensive Package: Included with your purchase are essential items such as a premium on/off shower head, gas regulator, US-standard garden hose, and installation hardware.

Specifications

  • Brand: CAMPLUX ENJOY OUTDOOR LIFE
  • Capacity: 1.32 gallons
  • Power Source: Battery Powered
  • Product Dimensions: 4.33"W x 20.28"H
  • Special Features: Dry Combustion Protection, Easy to Install, Flame Failure Protection, Low Water Flow Protection, Portable

If you're in search of a reliable and portable hot water solution for outdoor activities, the CAMPLUX 1.32 GPM Portable Water Heater could be just what you need. Weighing only 10 pounds, this lightweight unit is designed with convenience in mind, making it easy to transport and set up for camping trips, tailgating, or any outdoor event where hot water is a must.

Rinnai RX-OVC Outdoor Exhaust Vent Cap for Tankless Water Heaters

Rinnai RX-OVC Outdoor Exhaust Vent Cap for Rinnai RX & CX Condensing Tankless Water Heater

Pros

  • Helps free up indoor space by allowing outdoor installation.
  • High efficiency rating at 96% UEF.
  • Adaptable to both propane and natural gas.
  • Longer lifespan compared to traditional tank heaters.
  • User-friendly interface for easy operation.
  • Supports advanced features like hot water circulation based on usage patterns.

Cons

  • Requires professional installation which may incur additional costs.
  • Tankless water heaters must be purchased separately.
  • Additional components like the Control-R module may increase total investment.

Key Features

  • Compatible with Rinnai RX and CX series models.
  • Designed for outdoor installation of tankless water heaters.
  • Easy installation when paired with a qualified technician.
  • Includes a Quick Flush function for simplified maintenance.
  • Utilizes Smart-Circ technology to learn your hot water usage patterns.
  • Compact design maximizes residential space.
  • Energy Star qualified for energy efficiency.
  • Wi-Fi connectivity available via Control-R module (sold separately).

Specifications

  • Brand: Rinnai
  • Power Source: gas_powered
  • Product Dimensions: 18.5"W x 6"H
  • Special Feature: LED Display
  • Color: Silver

The Rinnai RX-OVC Outdoor Exhaust Vent Cap is specifically designed for use with the Rinnai RX and CX series condensing tankless water heaters. If you are considering installing your water heater outdoors, this exhaust vent cap is an essential component that will help optimize functionality and efficiency. The cap fits a variety of Rinnai models including RXP160iN, RXP199iN, RX130iN, RX160iN, RX180iN, and RX199iN. It's important to note that the tankless water heaters are sold separately from this vent cap.

This outdoor vent cap allows for the installation of your Rinnai SENSEI RX series tankless water heater outside, making it possible to reclaim valuable indoor space while benefiting from the advanced technology that these units offer.

CAMPLUX Propane Tankless Water Heater - 2.64 GPM, 68,000 BTU

CAMPLUX Tankless Water Heater Propane Indoor, Up to 2.64 GPM 68,000 BTU

Pros

  • Highly efficient and compact design suitable for limited space.
  • Provides quick access to hot water within 3 seconds.
  • Effective anti-freeze protection for reliable performance in colder climates.
  • Low maintenance due to durable materials and construction.
  • Good customer support with accessible service options.

Cons

  • Flow rate may not be sufficient for larger households needing simultaneous hot water usage.
  • Initial setup may require professional installation if you're not familiar with plumbing systems.
  • Dependent on liquid propane, which may not be suitable for all users.

Key Features

  • Endless Hot Water: Delivers up to 2.64 GPM for efficient heating.
  • Compact Design: Saves over 200% of available space compared to tank water heaters.
  • ±1℉ Temperature Control: Advanced sensors maintain a constant temperature with minimal fluctuations.
  • Anti-Freeze Protection: Activates below 39°F to prevent heat exchanger freeze damage.
  • Easy Installation: Meets national standards and includes 1/2" NPT interfaces for gas and water connections.
  • Durability: Built for a lifespan of up to 5 years with high-efficiency copper heat exchangers.
  • Customer Support: Offers 3 years limited after-sales service and 24/7 customer support.

Specifications

  • Brand: CAMPLUX ENJOY OUTDOOR LIFE
  • Capacity: 2.64 gallons
  • Power Source: Liquid Propane
  • Product Dimensions: 5.9"W x 21.3"H
  • Special Features: Anti-Freezing Protection, On-Demand Hot Water, Overheat Protection, Power Off Memory, Precise Constant Temperature

The CAMPLUX Tankless Water Heater Propane Indoor is a compact and efficient solution for those seeking endless hot water on demand. With a flow rate of up to 2.64 GPM and a heating capacity of 68,000 BTU, this heater is designed for small living spaces such as tiny houses, mobile homes, and apartments. Its innovative features ensure that you can enjoy consistent hot water for one to two points without the bulk of traditional tank heaters.

APUS Tankless Propane Water Heater - 4.42 GPM, 95,000 BTU

APUS Tankless Water Heater Propane Gas, Up to 4.42 GPM, Indoor Hot Water Heater, 95,000 BTU on Demand Instant Hot Water Heaters with Smart Digital Display, Space Gray

Pros

  • Provides instant hot water whenever needed, eliminating the wait time associated with traditional heaters.
  • Energy-efficient operation results in lower utility bills over time.
  • Compact design makes it ideal for smaller spaces.
  • Advanced technology ensures stable water temperature during peak usage.

Cons

  • Requires liquid propane as a power source, which may not be available in all areas.
  • Installation could require professional assistance, adding to initial costs.
  • Must be drained during prolonged freezing conditions to avoid damage.

Key Features

  • High Capacity: Delivers 95,000 BTU with a flow rate of 4.42 GPM, suitable for simultaneous use in two showers and one sink.
  • Low-Flow Start Technology: Innovative design allows for functionality even at low flow rates of 0.66 GPM.
  • Precise Temperature Control: Maintains water temperature within ±1°F of your desired setting (adjustable from 95°F to 140°F).
  • High Thermal Efficiency: Achieves over 85% thermal efficiency, providing 30% more energy savings compared to traditional tank models.
  • Compact Design: Space-saving dimensions of 20.55"H x 13.27"W x 5.91"D and operates quietly at 36dB.
  • Intelligent Freeze Protection: Built-in protection that activates in low temperatures to prevent damage.
  • Comprehensive Safety Features: Includes multiple-layer safety protection and automatic shutdown in case of risk detection.

Specifications

  • Brand: APUS
  • Capacity: 4.42 gallons
  • Power Source: Liquid Propane
  • Product Dimensions: 5.9"W x 20.55"H
  • Special Features: Anti-Freezing Protection, Dry Combustion Protection, Flame Failure Protection, LED Display, Overheat Protection

The APUS Tankless Water Heater is designed to meet the hot water needs of modern households while maximizing efficiency and safety. With a powerful heating capacity of 95,000 BTU and a flow rate of up to 4.42 GPM, this unit provides reliable hot water on demand for multiple faucets. Whether you're taking a shower or doing laundry, you can expect consistent temperatures without sudden fluctuations.

Rheem Prestige Condensing Tankless Outdoor Water Heater 8.4 GPM

Rheem Prestige Condensing Tankless Outdoor Natural Gas Water Heater 8.4 GPM - RTGH-84XLN-2

Pros

  • High energy efficiency saves on operating costs
  • Compact design is perfect for replacing traditional tanks
  • Reliable hot water delivery minimizes wait times
  • Reduces environmental impact due to low emissions
  • Comes with essential accessories for easy setup

Cons

  • Requires professional installation; DIY may void warranty
  • Rated only 3.2 based on user reviews, indicating mixed experiences
  • May not be suitable for very large households needing excessive hot water at once

Key Features

  • Continuous hot water supply for multi-bathroom homes
  • Industry-leading low flow activation with minimum flow rates of 0.26 GPM
  • Ultra Low NOx burner to meet SCAQMD regulations
  • Guardian Overheat Film Wrap for enhanced safety
  • Maintenance notification settings and self-diagnostic system
  • EcoNet enabled mobile app compatibility (additional kit required)
  • Built-in condensate neutralizer
  • Includes digital remote control and 10ft thermostat wire
  • Outdoor installation with freeze protection down to -30 degrees

Specifications

  • Brand: Rheem
  • Capacity: 8.4 gallons per minute
  • Power Source: Natural Gas
  • Special Features: Water & Gas Leak Detection
  • Color: Gray
  • Warranty: 12-year heat exchanger, 5-year parts, 1-year labor

The Rheem Prestige Condensing Tankless Outdoor Natural Gas Water Heater (RTGH-84XLN-2) is designed for those who demand a reliable source of hot water without taking up space with bulky tanks. With a capacity of 8.4 GPM, this unit provides continuous hot water, making it ideal for households with multiple bathrooms.

This model stands out with its industry-leading low flow activation, which activates at a minimum flow rate of just 0.26 GPM. This feature ensures that you receive hot water even during low-demand situations. The Ultra Low NOx burner complies with strict safety and emissions standards, reducing environmental impact without sacrificing performance.

Stiebel Eltron DHX 15-2 Plus Electric Tankless Water Heater

Stiebel Eltron DHX 15-2 Plus POU Electric Tankless Water Heater 14.4kW 240V

Pros

  • Compact design suitable for small spaces
  • On-demand hot water capability minimizes waste and saves energy
  • High efficiency with a power rating of 14.4kW at 240V
  • Easy installation with hard wiring requirements clearly outlined
  • Lead-free compliance tested by WQA to NSF/ANSI 372 standards

Cons

  • Requires professional installation due to hard wiring necessities
  • May not meet hot water demands for larger households simultaneously
  • Higher upfront cost compared to traditional tank water heaters

Key Features

  • Exclusive motor control valve that regulates flow rate to maintain output temperature
  • Backlit multifunction display for easy operation
  • Output temperature presets for personalized settings
  • Energy savings calculator to help you estimate usage

Specifications

  • Brand: Stiebel Eltron
  • Power Source: Hard Wiring Required
  • Product Dimensions: 7.95"W x 14.17"H
  • Special Feature: Exclusive motor control valve, Advanced Flow Control, Digital Backlit Display
  • Color: White

The Stiebel Eltron DHX 15-2 Plus POU Electric Tankless Water Heater is designed to provide a reliable and efficient hot water solution for your home. This model operates by heating water on-demand, which means it only activates when needed. This feature not only enhances convenience but also contributes to energy savings compared to traditional tank water heaters.

One of the standout features of the DHX Plus is its ability to maintain a consistent output temperature regardless of inlet water temperature. The unit automatically switches off when the tap is closed, further optimizing energy usage. With certifications for safety and compliance, including ANSI/UL Standard 499 and CAN/CSA Standard C22.2 No. 64, this water heater promises reliability and peace of mind.

CAMPLUX Portable Tankless Water Heater - 1.58 GPM, Black

CAMPLUX Portable Tankless Water Heater 1.58 GPM, BW158B Outdoor Propane Water Heater Camping, 41,000 BTU, Black

Pros

  • Lightweight and easily portable design.
  • Quick heating capabilities for immediate access to hot water.
  • User-friendly installation process.
  • Versatile temperature control options.
  • Effective in areas with low water pressure.
  • Responsive customer support available.

Cons

  • Requires a propane tank, which adds to the overall cost and logistics.
  • May not perform as efficiently in extremely cold temperatures.
  • Some users reported inconsistencies with temperature settings.

Key Features

  • Portable & Lightweight: Only weighs 13 lbs, featuring a foldable handle for easy transport and hanging.
  • Instant Hot Water: Delivers a maximum output of 41,000 BTU/hr with a flow rate of 1.58 GPM.
  • Easy Installation: Connects easily to a water supply and a 20 lb propane tank for immediate use.
  • Simple Temperature Control: Equipped with ECO & Full knobs and an LED temperature display for effortless adjustments.
  • Low Water Pressure Start: Operates with a minimum of 3.0 PSI, suitable for remote areas.
  • Customer Support: Available via Amazon or through provided contact information in the manual.
  • Tip: Note that the old and new logo versions may be shipped randomly.

Specifications

  • Brand: CAMPLUX ENJOY OUTDOOR LIFE
  • Capacity: 1.58 gallons
  • Power Source: Battery Powered
  • Special Feature: Portable
  • Color: Black

The CAMPLUX Portable Tankless Water Heater is an excellent choice for anyone in need of a reliable hot water solution while camping or in off-grid situations. Weighing only 13 lbs, it's designed for portability and convenience, making it easy for you to carry and hang wherever your adventures take you.

This outdoor propane water heater boasts a maximum output power of 41,000 BTU/hr, delivering hot water at a flow rate of 1.58 gallons per minute. This means you can enjoy instant hot water for various needs, from showering to washing dishes.

Installation is straightforward; simply connect it to a water supply and a standard 20 lb propane tank. With features like easy temperature control through the ECO and Full knobs, along with an LED display, adjusting to your ideal water temperature is hassle-free. Plus, it operates effectively even in low water pressure conditions, starting at just 3.0 PSI, which is perfect for rural cabins or other remote setups.

For those who value customer service, CAMPLUX ensures assistance is readily available through Amazon or the contact details included in the manual, making your experience smoother and more supportive.

MIZUDO Natural Gas Tankless Water Heater - 199,000 BTU Indoor

MIZUDO Natural Gas Tankless Water Heater, 199,000 BTU, Indoor

Pros

  • Highly efficient operation with no standby heat loss.
  • Smart technology allows remote management and monitoring.
  • Spacious hot water supply suitable for large households.
  • Well-supported by a comprehensive warranty and customer service.
  • Compact design saves space compared to traditional tank heaters.

Cons

  • Requires professional installation which may incur additional costs.
  • Not recommended for elevations above 3,000 feet.
  • Initial investment can be higher than traditional storage tank models.

Key Features

  • Up to 10.3 GPM Whole-House Hot Water: Supports hot water demand for 2–3 bathrooms, along with kitchen faucets, sinks, and dishwashers.
  • Precise Temperature Control: Maintains water temperature within ±1°F, with an adjustable maximum of 149°F.
  • Low-Flow Activation: Efficiently heats water on demand, reducing standby heat loss, ideal for low-flow fixtures.
  • Smart WiFi Control: Manage your heater remotely via an app; compatible with Amazon Alexa for added convenience.
  • Reliable Warranty: Comes with a 2-year full unit warranty and 5-year heat exchanger coverage, alongside 24/7 customer support.
  • Outdoor Oxygen Combustion: Features a sealed concentric direct-vent system that prevents backflow and keeps fumes out.
  • Compact Size: Dimensions of 15.9"W x 24.8"H make it easy to install in closets or laundry rooms.

Specifications

  • Brand: MIZUDO
  • Capacity: 10.3 gallons
  • Power Source: Natural Gas
  • Product Dimensions: 15.9"W x 24.8"H
  • Special Features: 24/7 Customer Service, CSA Certified, Up to 5 Years Warranty, Low Water Pressure Startup, Smart WiFi and App Control

The MIZUDO Natural Gas Tankless Water Heater is a robust solution designed for homeowners seeking efficient, on-demand hot water. With an impressive heating capacity of 199,000 BTU, this unit can deliver up to 10.3 gallons per minute (GPM), making it suitable for simultaneous use across multiple fixtures including bathrooms, kitchens, and laundry rooms. This tankless design is a significant upgrade from traditional 50-gallon tanks, particularly for busy households.

The 20 Best Tankless Water Heaters for Your Home – Price, Ratings, Reviews & Sales Insights

Product Name Image Price Rating Review Count Expert ScoreSales Last MonthBuy
HYDRO MASTER Tankless Water Heater Service Valve Kit$62.46
(4.6)
3544 98 500 Get it on Amazon
CAMPLUX 5L Portable Tankless Water Heater - Instant Hot Water$136.79
(4.2)
3345 80 10 Get it on Amazon
GASLAND BS158 Portable Gas Water Heater - 1.58GPM$169.99
(4.3)
1465 77 50 Get it on Amazon
CAMPLUX Portable Water Heater - 1.32 GPM, 5L Tankless Propane$151.99
(4.2)
1466 75 10 Get it on Amazon
Noritz GQ-C3261WX-FF EZ Series Tankless Water HeaterUnlock the price
(5.0)
3 75 10 Get it on Amazon
Ranein 6L Propane Tankless Water Heater - 1.58 GPM$159.0
(4.3)
50 74 100 Get it on Amazon
Rinnai RX-OVC Outdoor Exhaust Vent Cap for Tankless Water HeatersUnlock the price
(4.8)
49 74 10 Get it on Amazon
Vancepic 13kW Electric Tankless Water Heater - 240V$219.0
(4.8)
8 74 10 Get it on Amazon
Camplux Pro 6L Portable Tankless Water Heater$169.99
(4.2)
1110 74 10 Get it on Amazon
Ranein Tankless Propane Gas Water Heater, 3.6 GPM$299.0
(4.1)
442 73 50 Get it on Amazon
CAMPLUX Portable Tankless Water Heater - 1.58 GPM, Black$169.99
(4.1)
757 73 10 Get it on Amazon
CAMPLUX Portable Propane Water Heater - 1.58 GPM$161.49
(4.1)
757 73 10 Get it on Amazon
APUS 27kW Electric Tankless Water Heater - Instant Hot Water$338.99
(4.1)
117 73 100 Get it on Amazon
CAMPLUX 3.54" Stainless Steel Rain Cap for Tankless Water Heater$22.99
(4.4)
191 73 10 Get it on Amazon
Vancepic Propane Gas Tankless Water Heater - 100,000 BTU$359.0
(4.6)
7 73 10 Get it on Amazon
Rheem RTGH 9.5 GPM Natural Gas Tankless Water HeaterUnlock the price
(4.3)
43 72 10 Get it on Amazon
APUS Tankless Propane Water Heater - 4.42 GPM, 95,000 BTU$284.97
(4.2)
111 72 50 Get it on Amazon
Electrolux 14kW Wifi Tankless Water Heater - 240V, 3.4 GPM$348.99
(4.4)
32 72 10 Get it on Amazon
Rheem RTG-84XLN-3 Outdoor Tankless Natural Gas Water Heater$964.1
(4.8)
29 72 10 Get it on Amazon
Ranein Tankless Propane Gas Water Heater - 5.3 GPM$599.0
(4.1)
446 71 10 Get it on Amazon
Ranein Propane Gas Tankless Water Heater - 5.3 GPM$579.0
(4.1)
446 71 10 Get it on Amazon
Ranein 12L Outdoor Propane Tankless Water Heater - 68,000 BTU$269.0
(4.2)
32 71 10 Get it on Amazon
CAMPLUX Propane Tankless Water Heater - 2.64 GPM, 68,000 BTU$282.14
(4.1)
101 71 10 Get it on Amazon
Stiebel Eltron DHX 15-2 Plus Electric Tankless Water Heater$358.35
(4.3)
61 71 10 Get it on Amazon
MIZUDO Natural Gas Tankless Water Heater - 199,000 BTU Indoor$999.99
(4.4)
308 71 10 Get it on Amazon
36kW Electric Tankless Water Heater with WiFi - ETL Certified$629.98
(4.3)
60 71 10 Get it on Amazon
Ranein 13kW Tankless Electric Water Heater - 3.1 GPM$186.15
(4.1)
111 71 10 Get it on Amazon
CAMPLUX Portable Propane Water Heater 1.32 GPM$239.99
(4.2)
11 71 10 Get it on Amazon
GASLAND Gasmart C Propane Tankless Water Heater - 5 GPM$359.99
(4.2)
77 71 10 Get it on Amazon
Westinghouse Tankless Gas Water Heater - 7.9 GPM, 180,000 BTU$799.92
(4.4)
27 71 10 Get it on Amazon
Rinnai RXP160iN Smart Sense Tankless Water Heater$1685.6
(4.5)
32 70 10 Get it on Amazon
Rheem RTGH Series 8.4 GPM Natural Gas Tankless Water Heater$1168.99
(4.4)
61 70 10 Get it on Amazon
APUS Propane Tankless Water Heater - 140,000 BTU, 6.8 GPM$475.99
(4.0)
104 70 10 Get it on Amazon
Electrolux 8kW Tankless Water Heater - Electric 240V$242.99
(4.0)
2 70 10 Get it on Amazon
Propane Tankless Water Heater, 4.21GPM Indoor Model$189.99
(3.9)
64 70 10 Get it on Amazon
Rheem 6kW 240V Point of Use Tankless Electric Water HeaterUnlock the price
(3.8)
196 70 10 Get it on Amazon
Stiebel Eltron Tempra 36 Trend Electric Tankless Water Heater$749.0
(4.1)
50 69 10 Get it on Amazon
Propane Tankless Water Heater 4.74 GPM - Instant Hot Water$219.99
(3.8)
48 69 10 Get it on Amazon
Rinnai CX199iN SENSEI CX Commercial Tankless Water Heater$1752.8
(4.5)
22 69 10 Get it on Amazon
Tankless Propane Water Heater 2.11GPM Portable Outdoor$139.99
(3.8)
94 69 10 Get it on Amazon
Rheem RTG Series 9.5 GPM Natural Gas Tankless Water Heater$1320.99
(4.1)
11 68 10 Get it on Amazon
Rheem RETEX-36 36kW Electric Tankless Water Heater$990.54
(3.4)
18 65 10 Get it on Amazon
IKONIC RTGH-SR11i 199,000 BTU Tankless Water Heater$2262.27
(3.7)
10 64 10 Get it on Amazon
Noritz EZ98DVNG Tankless Water Heater - GQ-C2859WX-FF US NG$1299.99
(3.0)
2 63 10 Get it on Amazon
Rheem Prestige Condensing Tankless Outdoor Water Heater 8.4 GPM$2499.38
(3.2)
4 61 10 Get it on Amazon